Veritas Storage Foundation™ 5.0.1 for Oracle RAC Installation, Configuration, and Administrator's Guide Extracts for the HP Serviceguard Storage Management Suite on HP-UX 11i v3

1 Introducing Serviceguard Extension for RAC
This chapter contains the following topics:
• “About Serviceguard Extension for RAC” (page 11)
• “How Serviceguard Extension for RAC Works (High-Level Perspective)” (page 12)
• “Component Products and Processes of SG SMS Serviceguard Cluster File System for RAC”
(page 13)
• “Communication Infrastructure” (page 14)
• “Cluster Interconnect Communication Channel” (page 15)
• “Low-level Communication: Port Relationship Between GAB and Processes” (page 16)
• “Cluster Volume Manager” (page 16)
• “Cluster File System” (page 17)
• “Oracle Disk Manager” (page 18)
• “Additional Features of Serviceguard Extension for RAC” (page 19)
About Serviceguard Extension for RAC
HP Serviceguard Extension for RAC (SGeRAC) is a storage management and clustering solution
that is included with the HP Serviceguard Storage Management Suite (SG SMS) Serviceguard
Cluster File System for RAC bundle. The SG SMS Serviceguard Cluster File System for RAC bundle
integrates existing storage management and clustering technologies into a flexible solution for
administrators, providing a robust infrastructure for Oracle® Real Application Clusters (RAC)
that simplifies management of RAC databases.
NOTE: The HP Serviceguard Storage Management Suite (SG SMS) provides many options for
clustering and storage. The information in this document corresponds to the Serviceguard Cluster
File System for RAC option. Refer to the HP Serviceguard Storage Management Suite version A.03.00
Release Notes for the HP-UX version you are running, for specific information on bundled features
and options. You can access the HP Serviceguard Storage Management Suite version A.03.00 Release
Notes at: http://docs.hp.com/en/ha.html#HP%20Serviceguard%20Storage%20Management%20Suite
SGeRAC enables you to:
• Create a standard approach toward application and database management in data centers.
While other clusterware can only work with an Oracle database, SGeRAC incorporates
existing storage management and clustering technologies that provide flexible support for
many types of applications and databases. Administrators can apply existing expertise of
technologies toward this product.
• Set up an infrastructure for Oracle RAC that simplifies database management while fully
integrating with Oracle Clusterware, formerly known as Oracle Cluster Ready Services
(CRS).
• Enhance scalability and availability with access to eight RAC instances per database in a
cluster.
• Transition from a local high availability site to a wide-area disaster recovery environment
with primary and secondary sites.
• Back up and recover databases using volume-level and file system-level snapshot
technologies. SGeRAC enables full volume-level snapshots for off-host processing that
reduce load on production systems, and file system-level snapshots that involve efficient
backup and rollback processes.
• Prevent data corruption at the storage layer with robust split-brain protection.
• Increase scalability with high throughput and low latency technology for use by Oracle
Cache Fusion.
About Serviceguard Extension for RAC 11